I'm not sure exactly what the rules are on second guesses, but I think the general one is after like 3 or 4 other people have guessed and your guess has been confirmed wrong, you're allowed to guess again. Also, none of these are right, the major component of what made Ancestral Spirit close wasn't that it resurrected a minion, since this card doesn't actually do that. Selfless Hero is also pretty close in that regard.
I think second guesses are fine as long as you're not just spamming guesses, like there's actual thought behind your guess. Otherwise I'm sorry I keep guessing but I think that's the point of this to think and then try to get it right. Anyway I have another 2 but I think Clutchmother Zavas fits it a little better than my other thought somewhat. My reasoning is:
For the first riddle her not being forgotten over time and hiding in the shadows refers to how if you keep discarding her they your opponent will always know she is in your hand and if the shadows are referring to your hand then she can't hide because the opponent already knows she is there. The bell tolling refers to when you play something that discards a card if she is the one discarded she gives her life for the cause and with her effect she was surely meant for discarding a lot.
Second riddle part the land below is Un'Goro or just the warlock underworld in general, the fear would be if people see her growing but don't have any means of killing her when she is played, and then the last 3 lines again refer to her being discarded and put back into your hand (although I've never seen her discard animation so I could be wrong).
the first riddle talks about how even though he's rotated out no one really forgot him and how killing a voidcaller can spawn an even bigger threat and the second riddle talks about how he comes from the void, and when he hits the board most people are scared, except those with silence perhaps, and how if you have another voidcaller in hand the deathrattle of the first can summon it
None of these are correct still, I'll say that lines 1 and 2 of the first riddle refer directly to other cards, as does the 'cause' in line 4. Hopefully that should be enough at this point, but if not I'll try to think of another limerick for you guys.
Sorry If posting a second answer too fast after posting another one isnt allowed, I am kinda new here and not aware of all the rules. Plus I gotta go for a while and I want to be sure my answer will be seen before som1 finds it out :p
Well, after taking a look at some of your point outs (in your previous answers, not riddles.) I came into a conclusion that, this card, might be somehow Alarm-o-bot..? I mean some lines in your riddles fit well to its theme metaphorically and literally. My concern is that, some others dont. :p